Set-works for saw-mills



(No Model.) 4 Sheets-Sheet 1 T. J. ,NEAGY.

SET WORKS FOR SAW MILLS.

No. 333,244. Patented Dec. 29, 1885.

Z%/ (IA/666 N. PEIERS, Fhalwullwgnpber, WnhingiorL DC.

(No Model.) 4 Sheets-Sheet 2.

\ T. J. NEAG-Y.

SET WORKS FOR SAW MILLS.

No. 333,244 Patented Dec. 29, 1885.

WJ Z W 0 my W N, PETERS. PhowLilhngnphur, Walhinginn. D. C,

(No Model.)

4 Sheets-Sheet 3.

T. J. NEAGY.

SET WORKS POR' SAW MILLS.

Patented Dec. 2-9, 1885.

g/ ow? (No Model.) 4 Sheets-Sheet 4. T. J. NEAOY.

SET WORKS FOR SAW MILLS.

Patented Dec. 29, 1885.

Fw/nes'sesz' bers of the carriage M.

STATES PATENT OFFICE.

THOMAS J. NEAOY, OF MILWAUKEE, WISCONSIN.

SET-WORKS FOR SAW-MILLS.

SPECIFICATION forming part of Letters Patent No. 333,244, dated December 29, 1885.

Application filed October 4, 1884.

To all whom it may concern:

Beit known that I, THOMAS J. NEAOY, of the city of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Set- Works for Saw-Mills; and Ido hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The object of my invention is an easy, accurate, and effectual means of advancing the log or timber at regular intervals for sawing the same into lumber of uniform thickness, and

means for adjusting the thickness of the lumher as desired.

It consists, essentially, of a pair of ratchetwheels keyed upon the set-shaft, a pair of pawl-bearing segmental gears pivoted upon refer to the same parts in the several figures.

Figure l is an end elevation of the machine. Fig. 2 is a front elevation. Fig. 3 is a vertical ction passing through the axis of the setiaft. Figs. 4, 5, 6, and 7 are detail views of Various parts of the machine detached.

A represents a quadrant-shaped cast-iron frame, secured by its broad base a to the tim- It is provided near its base with bearings for the set-shaft O and the short transverse shaft P of the bevel-gear T.

D D are segmental casings, placed over the ratchet-wheels B B, and provided on each side thereof with the hubs. c a, through which the set-shaft 0 passes. They are provided also on their inner opposite faces with the segmental bevel-gears O O, with which the small bevel- Serial No. 144,704. (No model.)

gear N meshes, and with the pawlsd d, pivoted therein in pairs upon the pins 6 e, passing through said casings from side to side. These pawls d dare held in engagement with the ratchet-wheels B B by the springs d d, secured by their shanks in said casings D. The ratchet-wheels B B are fixed within the casings D upon shaft 0 by the keys 0 0, while the hubs c c of said casings are permitted to turn freely thereon. Between the frame A and the left-hand ratchet-wheel B, as shown in Fig. 3, the arm K is mounted by means of the broad sleeve at its lower end upon the hub of said ratchet-wheel B, the inner hub of its casing D, and a corresponding hub formed upon the frame A about set-shaft 0, whereby it is adapted to turn freely about the center of said set-shaft and of the graduated quadrant scalerack a.

The several parts just described interlock and are combined and arranged in the manner and order shown in Fig. 3,

The collars ff, recessed to receive the heads of the keys 0 a, bear against the outer hubs, c c, of casings D, and retain them with ratchetwheels B B and the swinging arm K in their proper positions. The collars ff are set as desired upon the shaft 0 by set bolts f f. The arm K is formed in its face toward the frame A, with a long recess or channel, in which is pivoted the lever I, so as to swing outward away from the rack a on the frame A. A spring, J, attached at its lower end to the arm K, bears at its upper end against the lever I and holds the detent n, with which said lever is furnished, in engagement with the rack a.

To prevent the overthrow of the ratchetwheels B B and set-shaft O by the inertia given thereto in operating the machinerapidly, I provide an elastic stop or, brake on the arm K, against which a block or lug, h, attached to the casing D on the adjacent side of the frame A, strikes at the end of the upward throw of the actuating-lever H, keyed to the front end of shaft P. It is composed'of a small hammer-shaped arm, 22, pivoted at its lower end in a socket formed in the arm K, and of a spring, I), attached to the rear of said arm K, and hearing at its upper end against a rearward projection from the upper end of the stop b. In its farward position, as shown in Fig. 1, where it is held by the spring 11, the stop b just clears the inner face of the rim of the ratchet-wheel B. When thrown back by the lug h on the casing D, it binds against said rim and prevents the further advance of said ratchet wheel and the set-shaft O, to which it is keyed. WVhen at rest, the righthand casing, D, as seen in Fig. 2, bears upon the bolt-head or lug z, raised on bed-plate a, as shown in Fig. 1.

To take up any lost motion or wear in the gears N and O O, I provide the gear Nwith two plates, 1) 1), each cog-toothed for about half its circumference to correspond exactly with the teeth 0 0 of said gear N, Figs. 4 and 5. The smaller end or face of said gear N is turned down or recessed to receive the supplemental cog-toothed plates 19 p, which nest together and are held in place by the nut and washer t. A curved spring, 1', with outwardly-projecting spurs at its approaching ends, is inserted between the gear N and the plates 1) 1), so that its spurs bear against said plates in opposite directions and cause the teeth 0 0 to overlap the teeth 0 0 of gear N, as shown in the right-hand half of Fig. 4. It is obvious that any space left between the cogs 0 0 and the cogs of the gears O 0 will in effect be taken up by the former actuated by the spring 0'.

In the machine herein shown and described each notch of the graduated rack a represents one-fourth of an inch in the lateral movement of the standards or logthat is, when the detent n of leverI rests in the first or lowest notch an upward and downward throw of the lever H will advance the standards one-fourth of an inch. In like manner, when the lever I is set at the second notch of the graduated rack, a double throw of the lever H will advance the standards half an inch, and so on.

By means of the ladder L, composed of five descending steps and secured to the lever I, upon which it slides up and down by the band I, .the one-fourth inch represented by each notch of the graduated rack a may be divided into four parts or sixteenths of an inch. The detent n is formed upon the rectangular collar n, which surrounds said lever I and ladder L, as shown in Fig. 6. The collar n is provided at the front with a handle, m, and is supported by the spring k, attached at the top to its rear face and at its lower end to the arm K, said spring is holding said ladder L snugly against the rear face of the lever I. When the collar n rests at the rear upon the middle step of ladder L, the travel of the standards will be indicated directly by the graduated face of rack a. Lowering said ladder one or two steps from the above zero-point reduces the travel of the standards by one sixteenth and one-eighth of an inch, respecttively, and vice versa. Thus the thickness of the lumber may be varied by sixteenths of an inch.

The four pawls d d pivoted in pairs in each casing D, are made of slightly diflerent lengths to insure the engagement of one, at least, with the ratchetwheels B B. To withdraw the standards to their starting-point, said pawls must be disengaged from the ratchet-wheels Y B B and the set-shaft turned to the left, (viewing the machine in the position shown in Fig. 1.)

To lift the pawls, I provide the following means: Two thin plates, E, curved to correspond with the circumference of ratchetwheels B B, are pivoted to the ends of the bed a of frame A, and inserted between the outer faces or sides of said ratchet-wheels and their casings D D, Figs. 1, 2, and 3. Their upper rear ends are curved upward and connected by a rod, F, which rests upon the rear end of a lever, G, fulcrumed in the frame A and projecting at the front of the machine, as seen in Fig. 1.- When the lever G is depressed and the plates E E thereby raised, their thin edges engage with the points of the outer pawls dd of each pair and raise them out of contact with the ratchet-wheels B B. The said outer pawls, dd, being the shorter of the pairs to which they belong, are provided on their under sides with the small right-angled arms 8 s, which project underneath the inner pawls d d .of each pair, and lift them also whenever the outer ones are raised.

My improved set-works operate as follows: The log having been placed upon the headblocks in the usual manner and dogged to the standards, the stop I; is properly setby means of lever I and. scale-rack a, and accurately adjusted by means of the ladder L, for splitting the lumber into the desired thicknesses. The log is then advanced laterally toward the saw by intervals by means of the lever H, the upward throw of which, acting through the gear N and segmental gear 0, and pawls d d upon the right-hand ratchet-wheel B, as seen in-Fig. 2, advances the standards through setshaft-O one-half of the desired interval, while the return downward throw of the lever H, acting through said gear N, the segmental gear 0, and pawls d d, upon the ratchet-wheel B on the opposite side, advances said standards in like manner the remaining half of the interval. While one casing, D, with its pawls d d is advancing, carrying with them the ratchet-wheel Bon the same side, the opposite casing and pawls are returning to their starting-point, slipping readily over the tooth (I face of the other ratchet-wheel B, which vances together with the opposite wheel B.

The above operation is repeated until the log or timber is completely sawed, as desired. The pawls d d are then lifted from the ratchetwheels B B by means of lever G, and the setshaft 0 turned back, and the standards thereby withdrawn to the front of the carriage.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a saw-mill set-works, the combination of the set-shaft O, ratchet'wheels B B, keyed thereon, pawl-bearing bevel-gears O O, loosely mounted upon said set-shaft, pawls d d, arranged to engage with said ratchet-wheels and alternately turn the same, bevel-pinion N, mounted upon transverse shaft P, between gears O 0, so as to mesh therewith, actuatinglever H, attached to shaft 1?, scale-rack a, lever I K, provided with a stop-block for limiting the throw of gears O O, and with a detent, a, by which it may be set at any desired point on said scale-rack a, substantially as and for the purposes set forth.

2. In a saw-mill set-works, the combination of the set-shaft C, ratchet-wheels B B, keyed thereon, pawl-bearing casing D D. provided with gears O O, turning about said ratchetwheels upon said set-shaft, bevel-gear N ,meshing with gears O O and mounted upon shaft P, actuating-lever H, keyed upon shaft P, together with an adjustable stop for limiting the movement of said gears O O, substantially as and for the purposes set forth.

3. The combination,in a saw-mill set-works, of the set-shaft O, the ratchet-wheels B B, keyed thereon, pawl-bearing gears D O, bevelgear N, meshing therewith, lever I, provided with spring-catch n, graduated scale-rack a, and the stop-block b, connected with lever I, substantially as and for the purposes set forth.

4. In a saw-mill set-works, the combination of the set-shaft O, ratchet-wheels B B, keyed thereon, pawlbearing casings and gears D O, pawls d d, gear N, meshing with gears O, pivoted arm K,provided with an elastic stop, I), lever I, pivoted in arm K and provided with detent n, and scale-rack a, substantially as and for the purposes set forth.

5. The eombination,in asaw-mill set-works, of the set -shaft 0, ratchet-wheels B B, made fast thereon, pawl-bearing gears O O, loosely mounted upon said set-shaft, pawls d d, gear N, meshing with gears O O, scale-rack a, and lever I K, provided with a stop to limit the movement of said gears O O, and with a detent, at, and a ladder, L, having a series of steps, whereby said detent a is adjusted forward or backward, substantially as and for the purposes set forth.

6. In a saw-mill set-works, the combination, with set-shaft O, ratchet-wheels B, and pawls d d, of the curved plates EE, rods F,connecting their inner ends,and levers G,substantially as and for the purposes set forth.

gear 0, and arranged to strike against said clutch b and cause the same to engage with and arrest the movement of the adjacent ratchet-wheel B at any desired point, substantially as and for the purposes set forth.

8. In a saw-millset-works, the combination of the set-shaft O, a ratchet-wheel, B, frame A, provided with rack a, arm K, lever I, pivoted therein, spring J, attached to arm K and bearing at its upper end against lever I, ladder L, connected with the lever I by band Z, collar it, provided with detent a, and spring k, substantially as and for the purposes set forth.

9. In a saw-mill set-works, the combination of the set-shaft O, ratchet-Wheels B,keyed there- 7 5 on, pawls d d, arranged to engage with said ratchet-wheels and pivoted in' or to supports which are mounted and turn upon said set-shaft about said ratchet-wheels, segmental rack a, and lever I K,arranged to swing from said set-shaft as a center about said rack or, and provided with a detent, n, adjustable in the direction of the movement of said lever, so as to divide the throw thereof between the notches in said scale a into smaller intervals, substantially as and for the purposes set forth.

10. The combination,in asaw-millsetworks, of the set-shaft O, bevel-gears O O, mounted thereon, bevel-pinion N, meshing therewith and having cogs 0 0, platespp, having corresponding cogs 0 0, and spring 1*, arranged to force said plates 10 p in opposite directions so as to take up the wear or lost motion between said pinion N and gears O O, with which it meshes, substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

THOMAS J. NEAGY. 

